In the hit show Pretty Little Liars, the pressure builds in Season 6, Episode 2 when Aria Montgomery (Lucy Hale), Hanna (Ashley Benson) and the Liars suspect Andrew Campbell (Brandon Jones) to be the mysterious A, but that's just a theory. Along the way they get help from Caleb Rivers (Tyler Blackburn), Rosewood's resident bad boy in leather moto jackets and hoodies.